Microplastic stress in plants: effects on plant growth and their remediations

Frontiers in Plant Science, Journal Year: 2023, Volume and Issue: 14

Published: Aug. 11, 2023

Microplastic (MP) pollution is becoming a global problem due to the resilience, long-term persistence, and robustness of MPs in different ecosystems. In terrestrial ecosystems, plants are exposed MP stress, thereby affecting overall plant growth development. This review article has critically analyzed effects stress plants. We found that stress-induced reduction physical accompanied by two complementary effects: (i) blockage pores seed coat or roots alter water nutrient uptake, (ii) induction drought increased soil cracking MPs. Nonetheless, physiological under four excessive production ROS, alteration leaf root ionome, (iii) impaired hormonal regulation, (iv) decline chlorophyll photosynthesis. Considering that, we suggested targeting redox regulatory mechanisms could be beneficial improving tolerance plants; however, antioxidant activities highly dependent on species, tissue, type, dose. also indirectly reduces altering productivity. However, MP-induced negative vary presence surface functional groups particle sizes. end, utilization agronomic approaches, including application regulators, biochar, replacing plastic mulch with crop residues, diversification, biological degradation, ameliorate The efficiency these methods MP-type-specific dose-dependent.

Language: Английский

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Using Exogenous Melatonin, Glutathione, Proline, and Glycine Betaine Treatments to Combat Abiotic Stresses in Crops

International Journal of Molecular Sciences, Journal Year: 2022, Volume and Issue: 23(21), P. 12913 - 12913

Published: Oct. 26, 2022

Abiotic stresses, such as drought, salinity, heat, cold, and heavy metals, are associated with global climate change hamper plant growth development, affecting crop yields quality. However, the negative effects of abiotic stresses can be mitigated through exogenous treatments using small biomolecules. For example, foliar application melatonin provides following: it protects photosynthetic apparatus; increases antioxidant defenses, osmoprotectant, soluble sugar levels; prevents tissue damage reduces electrolyte leakage; improves reactive oxygen species (ROS) scavenging; biomass, maintains redox ion homeostasis, gaseous exchange. Glutathione spray upregulates glyoxalase system, methylglyoxal (MG) toxicity oxidative stress, decreases hydrogen peroxide malondialdehyde accumulation, defense mechanisms, repairs, nitrogen fixation, phytochelatins. The proline enhances other physiological characteristics, osmoprotection, integrity plasma lemma, lipid peroxidation, pigments, phenolic acids, flavonoids, amino stress tolerance, carbon leaf content. glycine betaine growth, osmoprotection osmoregulation, relative water content, net rate, catalase activity, photorespiration, leakage, oxygen-evolving complex, chlorosis. Chemical priming has various important advantages over transgenic technology is typically more affordable for farmers safe plants, people, animals, while being considered environmentally acceptable. helps to improve quality quantity yield. This review summarizes discusses how melatonin, glutathione, proline, help crops combat stresses.

Language: Английский

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From challenges to solutions: The impact of melatonin on abiotic stress synergies in horticultural plants via redox regulation and epigenetic signaling

Scientia Horticulturae, Journal Year: 2023, Volume and Issue: 321, P. 112369 - 112369

Published: July 31, 2023

Language: Английский

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Melatonin as a key regulator in seed germination under abiotic stress

Journal of Pineal Research, Journal Year: 2024, Volume and Issue: 76(1)

Published: Jan. 1, 2024

Abstract Seed germination (SG) is the first stage in a plant's life and has an immense importance sustaining crop production. Abiotic stresses reduce SG by increasing deterioration of seed quality, reducing potential, vigor. Thus, to achieve sustainable level yield, it important improve under abiotic stress conditions. Melatonin (MEL) biomolecule that interplays developmental processes regulates many adaptive responses plants, especially stresses. this review specifically summarizes discusses mechanistic basis MEL‐mediated MEL regulating some stress‐specific common responses. For instance, induced specific include regulation ionic homeostasis, hydrolysis storage proteins salinity stress, C‐repeat binding factors signaling cold starch metabolism high temperature heavy metal activation aquaporins accumulation osmolytes drought stress. On other hand, mediated gibberellins biosynthesis abscisic acid catabolism, redox Ca 2+ are amongst Nonetheless such as endogenous contents, plant species, growth conditions also influence above‐mentioned In conclusion, interacting with different physiological mechanisms.

Language: Английский

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Melatonin Mitigates Salt-Induced Growth Inhibition Through the Regulation of Carbohydrate and Nitrogen Metabolism in Tomato Seedlings

Journal of soil science and plant nutrition, Journal Year: 2023, Volume and Issue: 23(3), P. 4290 - 4308

Published: July 5, 2023

Language: Английский

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The role of phytomelatonin receptor 1-mediated signaling in plant growth and stress response

Frontiers in Plant Science, Journal Year: 2023, Volume and Issue: 14

Published: March 10, 2023

Phytomelatonin is a pleiotropic signaling molecule that regulates plant growth, development, and stress response. In cells, phytomelatonin synthesized from tryptophan via several consecutive steps are catalyzed by decarboxylase (TDC), tryptamine 5-hydroxylase (T5H), serotonin N -acyltransferase (SNAT), -acetylserotonin methyltransferase (ASMT) and/or caffeic acid-3- O -methyltransferase (COMT). Recently, the identification of receptor PMTR1 in Arabidopsis has been considered turning point research, with function signal emerging as receptor-based regulatory strategy. addition, homologs have identified species found to regulate seed germination seedling stomatal closure, leaf senescence, responses. this article, we review recent evidence our understanding PMTR1-mediated pathways under environmental stimuli. Based on structural comparison melatonin 1 (MT1) human homologs, propose similarity three-dimensional structure receptors probably represents convergent evolution recognition different species.

Language: Английский

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Sodium Nitroprusside and Melatonin Improve Physiological Vitality and Drought Acclimation via Synergistically Enhancing Antioxidant Response in Dryland Maize

Journal of Plant Growth Regulation, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 17, 2024

Language: Английский

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Enhancing drought tolerance in horticultural plants through plant hormones: a strategic coping mechanism

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 15

Published: Jan. 20, 2025

Abiotic stresses are considered as a significant factor restricting horticultural crop productivity and quality. Drought stress is major environmental constraint among the emerging concerns. Plants have susceptibility to drought stress, resulting in marked decline production during last several decades. The development of effective strategies mitigate essential for sustainable agriculture food security, especially considering continuous growth world population. Several studies suggested that exogenous application phytohormone plants can improve tolerance by activating molecular physiological defense systems. Phytohormone pretreatment potential approach alleviating plants. In addition, melatonin, salicylic acid, jasmonates, strigolactones, brassinosteroids, gamma-aminobutyric acid phytohormones function regulators effects stress. These hormones frequently interact with one another survival drought-stressed environments. To sum up, this review will predominantly elucidate role related mechanisms across various horticulture species.

Language: Английский

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Melatonin enhanced low-temperature combined with low-light tolerance of pepper (Capsicum annuum L.) seedlings by regulating root growth, antioxidant defense system, and osmotic adjustment

Frontiers in Plant Science, Journal Year: 2022, Volume and Issue: 13

Published: Sept. 28, 2022

Melatonin (MT) is an important biologically active hormone that plays a vital role in plant growth and development. In particular, it has been investigated for its roles abiotic stress management. this study, pepper seedlings were subjected to low-temperature combined with low-light (LL) (15/5°C, 100 μmol m-2s-1) prior foliar spray of 200mM MT 168h investigate the protective seedlings. Our results demonstrated LL negatively affected root growth, accelerated accumulation reactive oxygen species (ROS), including H2O2 O2- , changed osmolytes contents, antioxidative system. However, these reversed by exogenous application. effectively promoted as indicated significant increase length, surface area, volume, tips, forks, crossings. addition, reduced burst ROS MDA contents induced LL, enhanced activities SOD, CAT, POD, APX, DHAR, MDHAR resulted upregulated expressions CaSOD, CaPOD, CaCAT, CaAPX, CaDHAR, CaMDHAR, elevated AsA GSH, declined DHA GSSH which prevented membrane lipid peroxidation protected plants from oxidative damages under stress. Furthermore, treated released high soluble sugar protein leave, might enhance tolerance maintaining substance biosynthesis cellular homeostasis levels carbohydrate cytosol. current findings confirmed mitigating potential application promoting improving defense system, ascorbate-glutathione cycle, osmotic adjustment.

Language: Английский

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Phytomelatonin: an emerging new hormone in plants

Journal of Experimental Botany, Journal Year: 2022, Volume and Issue: 73(17), P. 5773 - 5778

Published: Sept. 29, 2022

Language: Английский

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